The Coupling,shaft,flexible, cataloged under National Stock Number 3010-01-398-2102, is classified within Federal Supply Class 3010 (Torque Converters and Speed Changers) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Circor Pumps North America Llc. Government technical data includes 13 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3010-01-398-2102 |
| Primary Part Number | SBS5556 |
| Item Name | Coupling,shaft,flexible |
| FSC / FSG | 3010 / 30 — Torque Converters and Speed Changers |
| Manufacturer | Circor Pumps North America Llc |
| Status | ACTIVE |
| Bushing Material | STEEL AND RUBBER |
| Keyway Depth | 0.2250 INCHES NOMINAL FIRST END IN |
| Bore Length | 2.8750 INCHES NOMINAL FIRST END IN |
| Design Type | BUSHING |
| Keying Facility Type | KEYWAY FIRST END |
| Outside Diameter | 8.250 INCHES NOMINAL IN |
| Features Provided | KEYWAY AND COUNTERBORE AND SHROUDED COUPLING BOLT TYPE AND EXPOSED COUPLING BOLT TYPE |
| Bore Shape | TAPERED SECOND END |
| Bore Shape | STRAIGHT FIRST END |
| Keying Facility Quantity | 1 FIRST END |
| Keyway Width | 0.500 INCHES NOMINAL FIRST END IN |
| Bore Diameter | 2.1250 INCHES NOMINAL FIRST END IN |
| Bore Diameter | 2.0000 INCHES NOMINAL SECOND END IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| SF10979 ITEM 2,13,15 TO 18 | Circor Pumps North America Llc (USA) |
| SBS5556 PRIMARY | Circor Pumps North America Llc (USA) |
| Reference | Meaning |
|---|---|
| 3BS5556 | C/1 Advisory reference — outside the item-of-supply concept Circor Pumps North America Llc |
NSN 3010-01-398-2102 is a Coupling,shaft,flexible, manufactured by Circor Pumps North America Llc, classified under FSC 3010, Torque Converters and Speed Changers. Status: active.
NSN 3010-01-398-2102 has 2 manufacturer part numbers on file: SF10979 ITEM 2,13,15 TO 18 (Circor Pumps North America Llc), SBS5556 (Circor Pumps North America Llc).
Key specifications for SBS5556: Bushing Material: STEEL AND RUBBER; Keyway Depth: 0.2250 INCHES NOMINAL FIRST END IN; Bore Length: 2.8750 INCHES NOMINAL FIRST END IN; Design Type: BUSHING. 13 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.